Here’s an interesting little blogpost from a guy (David Aughenbaugh) that I was chatting with at Siggraph.

http://www.vfxconnection.com/DavidAughenbaugh/blog/

I haven’t had a chance to play with it yet so can’t really attest to how often it applies in real-world situations - be curious to hear what other people think. Still, I’m a big fan of using alternate representations of an image as a method for developing new techniques. I remember when I first discovered all the fun stuff that could be done by tossing something into HSV space and playing with the channels before coming back to RGB.

We always wanted to get some more frequency-based tools into Shake but management had a hard time figuring out how it was going to sell more licenses relative to features that made for good data-sheets. Would’ve been cool…